It is qualitative determination of human autoantibodies of the immunoglobulins class IgG to 16 different antigens *Mi-2? *Mi-2? *TIF1? *MDA5 *NXP2 *SAE1 *Ku *PM-Scl 100 *PM-Scl 75 *Jo-1 *SRP *PL-7 *PL-12 *EJ *OJ *Ro-52 in serum to support the diagnosis.